You (or someone like you) may have been my assigned dive buddy for a group dive in Cozumel a number of years ago. In Cozumel, having a DM is a legal requirement, and their main job is keeping the group together so that they ascend together at the end of the drift to be picked up by the boat. We were a group of experienced divers, and the DM assigned buddy teams within the group. I drew a man who claimed 600+ lifetime dives, and I believe he was accurate. He had very good skills. On the first dive, he drove me crazy as I tried to stay with the group and also keep track of him as he darted about, making it clear that whichever way the guided tour was going to go, he was going to go the opposite if possible. On the second dive, when asked which of the shallower sites we wanted to dive, we chose Paso Del Cedral because of its really nice complex coral swim through. It also often has a big current, and this day was no exception. As the guide led us to the coral swim through, I tried to maintain a midpoint between the group and my buddy, who was off on his own again, drifting in the current. When the DM reached the swim through, he looked back, and I pointed to my buddy, who was now so far along in the current that it would be impossible to get to us. So the DM led the group to him, and we finished the dive drifting along the edge of the reef. Back on the boat, my buddy asked what happened to that supposed great swim through, and the whole group glared at him in anger as one of them said we couldn't do it because we had to go after him instead. He didn't seem to care.Mind you, whichever way the guided tour goes, I'm going the opposite if possible...
Or maybe you are like the photographer in the group with which I dived off a liveaboard in Thailand. We had two groups, and they splashed 5 minutes apart. Each group was supposed to follow the DM through a certain path, ending up inside a large grotto full of great speleothems. (Open water--not a cavern.) it was one of the signature dives of that liveaboard experience. We were the second group. About halfway through the first part of the dive, this photographer saw something interesting in a coral formation, and he started taking pictures of it. He took pictures and he took pictures and he took pictures of it while we all hung around and waited for him to be done. The DM was new and non-assertive. Eventually he was done. By that time, everyone was low on air, so we surfaced and got picked up there. Back on the boat, he was raving about how many pictures he had taken on that dive. I said I was looking forward to the grotto and was sorry we had not gotten there. "Not me!" he said. He would much rather take pictures of living fish than look at dead rocks. As far as he was concerned, the rest of us had to prefer watching him take pictures of living fish to getting into that famed grotto.